Combined bearing and steam-feeding mechanism for rotary bake-ovens.



A P ATENTED JUNE 25, 1907.'y P. R. BARNEEISEE. COMBINED' BEARING AND STEAM EEEDING MEGHANISM EOE EOTAEE 'BAKE ovENs.'

APPLIUATION FILED JAN. 19. 1907.

1H: "anni: PETERS cn.. WASHINGTON. c, c.

UNITED STATES PATENT OFFICE.

FREDERICK R. BARNHEISEL, OF CHICAGO, ILLINOIS. COMBINED BEARING AND STEAMFE ED|NG MECHANISM FOR ROTARY BAKE-OVENS.

Specification of Letters Patent.

Original application led October 17, 1905, Serial No. 283,121. Divided and this application tiled January 19, 1907. Serial No. 353,107.

To all whom it may concern.

Be it known that I, FREDERICK R. BARN- HEIsEL, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in a Combined Bearing and. Steam-Feeding Mechanism for Rotary Bake-Ovens, of which the following is a specification, the samebeing a division of application Serial N o. 283,121, filed October 17,- 1905.

This invention relates more particularly to the construction and arrangement of the bearing of the shaft of a rotary bake oven whereby the bearing serves as a conduit for the distribution of steam to the interior of the baking chamber for the purpose of improving the baking conditions.

The object of the invention is to obviate the necessity for providing separate perforations through-the structure of the oven for the purpose of supplying steam, and at the same time to provide for the discharge of the steam at the most convenient and satisfactory point. f

In the drawings Figure 1 is a sectional elevation from front to rear of a rotary bake oven; Fig. 2 a side elevation of the crown bearing; and Fig. 3 a sectional plan view of the same. Numeral 4 indicates the oven having therein a cylindrical baking chamber 5, which is provided with a conical roof 6, in the center of which is located a crown bearingl 7 which more particularly forms the subject matter of the present invention. The crown bearing is of cylindrical shape and is provided with up er and lower flanges 8 and 9 which outwar ly extend from the cylindrical body and afford an intermediate space into which the masonry of the conical roof is entered. This arrangement serves to 4hold the crown bearing rigidly and tightly against displacement. The crown bearing is provided in its center with a vertically extending bearing hole 10 through which the rotary shaft is entered, and the bearing is provided on its interior with an annular-steam chamber 11 in the iioor of which is located a plurality of steam discharge holes 12 arranged in a circle around the bearing hole. Steam is supplied to the steam chamber by means of a steam pipe 13 which is adapted to receive Steam from any suitable source of supply.

The crown bearing formed in the manner above specified provides a iirm rigid bearing for the rotary shaft and at the same time affords a suitable means for distributing the steam at a most advantageous point. The steam admitted to the steam chamber is discharged through the cylindrically arranged openings immediately above the baking product, which insures an even, uniform and satisfactory distribution of the steam.4 At the same time the shape and construction of the crown bearing is one which enables it to be built into the structure of the surrounding oven roof, and the iianges afford a tight and rigid closure for the oven at this point. In addition to the fact that the bearing provides a steam chamber, the provision of the annular Patented June 25,1907.

opening within the bearing lightens its w eight without materially impairmg its strength, for all of which reasons the bearing is one which is highly satisfactory for the purpose intended.

What I regard as new and desire to secure by Letters Patent is:

1. In a rotary bake oven, a baking chamber, a bearing in the top of said chamber provided with a passage therethrough leading tov the baking chamber, and a steam pipe adapted to supply steam to said passage for discharge into the baking chamber, substantially as described.

2. In a rotary bake oven, the combination of a baking chamber, a bearing in the top of said chamber provided on its interior with an annular steam chamber having a plurality of openings for discharging 4the steam into the baking chamber, and a steam pipe leading to the annular chamber, substantially as described.

3. In a rotary bake oven, the combination of a baking chamber, a bearing located in the center of the roof of the baking chamber and provided with upper and lower anges embracing the masonry of the roof, the bearing being further provided on its interior with an Y annular steam chamber having a plurality of openings for discharging steam into the baking chamber, and a steam pipe leading to the annular chamber, substantially as described.

FREDERICK R. BARN HEISEL.

Witnesses:

WALKER BANNING, WILLIAM H. AIKEN.

IOO 

